From a57daf23db62738754c309dfcda0f4f3cfa62fa6 Mon Sep 17 00:00:00 2001 From: Alan Bowman Date: Mon, 23 May 2011 20:32:00 +0100 Subject: [PATCH] Add eCos/Cortex RTOS support --- src/rtos/Makefile.am | 2 +- src/rtos/eCos.c | 427 +++++++++++++++++++++++++++++++++ src/rtos/rtos.c | 2 + src/rtos/rtos_ecos_stackings.c | 63 +++++ src/rtos/rtos_ecos_stackings.h | 30 +++ 5 files changed, 523 insertions(+), 1 deletion(-) create mode 100644 src/rtos/eCos.c create mode 100644 src/rtos/rtos_ecos_stackings.c create mode 100644 src/rtos/rtos_ecos_stackings.h diff --git a/src/rtos/Makefile.am b/src/rtos/Makefile.am index 12368d2e..fba9d47c 100644 --- a/src/rtos/Makefile.am +++ b/src/rtos/Makefile.am @@ -23,7 +23,7 @@ include $(top_srcdir)/common.mk METASOURCES = AUTO noinst_LTLIBRARIES = librtos.la noinst_HEADERS = rtos.h -librtos_la_SOURCES = rtos.c rtos_standard_stackings.c FreeRTOS.c ThreadX.c +librtos_la_SOURCES = rtos.c rtos_standard_stackings.c rtos_ecos_stackings.c FreeRTOS.c ThreadX.c eCos.c librtos_la_CFLAGS = diff --git a/src/rtos/eCos.c b/src/rtos/eCos.c new file mode 100644 index 00000000..c26b66a0 --- /dev/null +++ b/src/rtos/eCos.c @@ -0,0 +1,427 @@ +/*************************************************************************** + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include +#include +#include "target/target.h" +#include "target/target_type.h" +#include "rtos.h" +#include "helper/log.h" +#include "rtos_ecos_stackings.h" + +static int eCos_detect_rtos( struct target* target ); +static int eCos_create( struct target* target ); +static int eCos_update_threads( struct rtos* rtos); +static int eCos_get_thread_reg_list(struct rtos *rtos, int64_t thread_id, char ** hex_reg_list ); +static int eCos_get_symbol_list_to_lookup(symbol_table_elem_t * symbol_list[]); + +struct eCos_thread_state +{ + int value; + char * desc; +}; + + +struct eCos_thread_state eCos_thread_states[] = +{ + { 0, "Ready" }, + { 1, "Sleeping" }, + { 2, "Countsleep" }, + { 4, "Suspended" }, + { 8, "Creating" }, + { 16, "Exited" } +}; + +#define ECOS_NUM_STATES (sizeof(eCos_thread_states)/sizeof(struct eCos_thread_state)) + +struct eCos_params +{ + char * target_name; + unsigned char pointer_width; + unsigned char thread_stack_offset; + unsigned char thread_name_offset; + unsigned char thread_state_offset; + unsigned char thread_next_offset; + unsigned char thread_uniqueid_offset; + const struct rtos_register_stacking* stacking_info; +}; + +const struct eCos_params eCos_params_list[] = +{ + { "cortex_m3", // target_name + 4, // pointer_width; + 0x0c, // thread_stack_offset; + 0x9c, // thread_name_offset; + 0x3c, // thread_state_offset; + 0xa0, // thread_next_offset + 0x4c, // thread_uniqueid_offset + &rtos_eCos_Cortex_M3_stacking // stacking_info + } + +}; + +#define ECOS_NUM_PARAMS ((int)(sizeof(eCos_params_list)/sizeof(struct eCos_params))) + +enum eCos_symbol_values +{ + eCos_VAL_thread_list = 0, + eCos_VAL_current_thread_ptr = 1 +}; + +static char* eCos_symbol_list[] = +{ + "Cyg_Thread::thread_list", + "Cyg_Scheduler_Base::current_thread", + NULL +}; + + + +#define ECOS_NUM_SYMBOLS (sizeof(eCos_symbol_list)/sizeof(char*)) + + +const struct rtos_type eCos_rtos = +{ + .name = "eCos", + + .detect_rtos = eCos_detect_rtos, + .create = eCos_create, + .update_threads = eCos_update_threads, + .get_thread_reg_list = eCos_get_thread_reg_list, + .get_symbol_list_to_lookup = eCos_get_symbol_list_to_lookup, + +}; + +static int eCos_update_threads( struct rtos* rtos) +{ + int retval; + int tasks_found = 0; + int thread_list_size = 0; + const struct eCos_params* param; + + if ( rtos == NULL ) + { + return -1; + } + + if (rtos->rtos_specific_params == NULL ) + { + return -3; + } + + param = (const struct eCos_params*) rtos->rtos_specific_params; + + if ( rtos->symbols == NULL ) + { + LOG_OUTPUT("No symbols for eCos\r\n"); + return -4; + } + + if ( rtos->symbols[eCos_VAL_thread_list].address == 0 ) + { + LOG_OUTPUT("Don't have the thread list head\r\n"); + return -2; + } + + + // wipe out previous thread details if any + if ( rtos->thread_details != NULL ) + { + int j; + for( j = 0; j < rtos->thread_count; j++ ) + { + if ( rtos->thread_details[j].display_str != NULL ) + { + free( rtos->thread_details[j].display_str ); + rtos->thread_details[j].display_str = NULL; + } + if ( rtos->thread_details[j].thread_name_str != NULL ) + { + free( rtos->thread_details[j].thread_name_str ); + rtos->thread_details[j].thread_name_str = NULL; + } + if ( rtos->thread_details[j].extra_info_str != NULL ) + { + free( rtos->thread_details[j].extra_info_str ); + rtos->thread_details[j].extra_info_str = NULL; + } + } + free( rtos->thread_details ); + rtos->thread_details = NULL; + } + + + // determine the number of current threads + uint32_t thread_list_head = rtos->symbols[eCos_VAL_thread_list].address; + uint32_t thread_index; + target_read_buffer( rtos->target, thread_list_head, param->pointer_width, (uint8_t *) &thread_index ); + uint32_t first_thread = thread_index; + do + { + thread_list_size++; + retval = target_read_buffer( rtos->target, thread_index + param->thread_next_offset, param->pointer_width, (uint8_t *) &thread_index ); + } while( thread_index!=first_thread ); + + // read the current thread id + uint32_t current_thread_addr; + retval = target_read_buffer( rtos->target, rtos->symbols[eCos_VAL_current_thread_ptr].address, 4, (uint8_t *)¤t_thread_addr); + rtos->current_thread = 0; + retval = target_read_buffer( rtos->target, current_thread_addr + param->thread_uniqueid_offset, 2, (uint8_t *)&rtos->current_thread); + if ( retval != ERROR_OK ) + { + LOG_OUTPUT("Could not read eCos current thread from target\r\n"); + return retval; + } + + if ( ( thread_list_size == 0 ) || ( rtos->current_thread == 0 ) ) + { + // Either : No RTOS threads - there is always at least the current execution though + // OR : No current thread - all threads suspended - show the current execution of idling + char tmp_str[] = "Current Execution"; + thread_list_size++; + tasks_found++; + rtos->thread_details = (struct thread_detail*) malloc( sizeof( struct thread_detail ) * thread_list_size ); + rtos->thread_details->threadid = 1; + rtos->thread_details->exists = true; + rtos->thread_details->display_str = NULL; + rtos->thread_details->extra_info_str = NULL; + rtos->thread_details->thread_name_str = (char*) malloc( sizeof(tmp_str) ); + strcpy( rtos->thread_details->thread_name_str, tmp_str ); + + + if ( thread_list_size == 0 ) + { + rtos->thread_count = 1; + return ERROR_OK; + } + } + else + { + // create space for new thread details + rtos->thread_details = (struct thread_detail*) malloc( sizeof( struct thread_detail ) * thread_list_size ); + } + + // loop over all threads + thread_index = first_thread; + do + { + + #define ECOS_THREAD_NAME_STR_SIZE (200) + char tmp_str[ECOS_THREAD_NAME_STR_SIZE]; + unsigned int i = 0; + uint32_t name_ptr = 0; + uint32_t prev_thread_ptr; + + // Save the thread pointer + uint16_t thread_id; + retval = target_read_buffer( rtos->target, thread_index + param->thread_uniqueid_offset, 2, (uint8_t *)&thread_id); + if ( retval != ERROR_OK ) + { + LOG_OUTPUT("Could not read eCos thread id from target\r\n"); + return retval; + } + rtos->thread_details[tasks_found].threadid = thread_id; + + // read the name pointer + retval = target_read_buffer( rtos->target, thread_index + param->thread_name_offset, param->pointer_width, (uint8_t *)&name_ptr); + if ( retval != ERROR_OK ) + { + LOG_OUTPUT("Could not read eCos thread name pointer from target\r\n"); + return retval; + } + + // Read the thread name + retval = target_read_buffer( rtos->target, name_ptr, ECOS_THREAD_NAME_STR_SIZE, (uint8_t *)&tmp_str); + if ( retval != ERROR_OK ) + { + LOG_OUTPUT("Error reading thread name from eCos target\r\n"); + return retval; + } + tmp_str[ECOS_THREAD_NAME_STR_SIZE-1] = '\x00'; + + if ( tmp_str[0] == '\x00' ) + { + strcpy(tmp_str,"No Name"); + } + + rtos->thread_details[tasks_found].thread_name_str = (char*)malloc( strlen(tmp_str)+1 ); + strcpy( rtos->thread_details[tasks_found].thread_name_str, tmp_str ); + + // Read the thread status + int64_t thread_status = 0; + retval = target_read_buffer( rtos->target, thread_index + param->thread_state_offset, 4, (uint8_t *)&thread_status); + if ( retval != ERROR_OK ) + { + LOG_OUTPUT("Error reading thread state from eCos target\r\n"); + return retval; + } + + for( i = 0; (i < ECOS_NUM_STATES) && (eCos_thread_states[i].value!=thread_status); i++ ) + { + } + + char * state_desc; + if (i < ECOS_NUM_STATES) + { + state_desc = eCos_thread_states[i].desc; + } + else + { + state_desc = "Unknown state"; + } + + rtos->thread_details[tasks_found].extra_info_str = (char*)malloc( strlen(state_desc)+1 ); + strcpy( rtos->thread_details[tasks_found].extra_info_str, state_desc ); + + rtos->thread_details[tasks_found].exists = true; + + rtos->thread_details[tasks_found].display_str = NULL; + + + tasks_found++; + prev_thread_ptr = thread_index; + + // Get the location of the next thread structure. + thread_index = rtos->symbols[eCos_VAL_thread_list].address; + retval = target_read_buffer( rtos->target, prev_thread_ptr + param->thread_next_offset, param->pointer_width, (uint8_t *) &thread_index ); + if ( retval != ERROR_OK ) + { + LOG_OUTPUT("Error reading next thread pointer in eCos thread list\r\n"); + return retval; + } + } + while( thread_index!=first_thread ); + + rtos->thread_count = tasks_found; + return 0; +} + +static int eCos_get_thread_reg_list(struct rtos *rtos, int64_t thread_id, char ** hex_reg_list ) +{ + + int retval; + const struct eCos_params* param; + + *hex_reg_list = NULL; + + if ( rtos == NULL ) + { + return -1; + } + + if ( thread_id == 0 ) + { + return -2; + } + + if (rtos->rtos_specific_params == NULL ) + { + return -3; + } + + param = (const struct eCos_params*) rtos->rtos_specific_params; + + + // Find the thread with that thread id + uint16_t id=0; + uint32_t thread_list_head = rtos->symbols[eCos_VAL_thread_list].address; + uint32_t thread_index; + target_read_buffer( rtos->target, thread_list_head, param->pointer_width, (uint8_t *) &thread_index ); + bool done=false; + while(!done) + { + retval = target_read_buffer( rtos->target, thread_index + param->thread_uniqueid_offset, 2, (uint8_t*)&id); + if ( retval != ERROR_OK ) + { + LOG_OUTPUT("Error reading unique id from eCos thread\r\n"); + return retval; + } + + if( id==thread_id ) + { + done=true; + break; + } + target_read_buffer( rtos->target, thread_index + param->thread_next_offset, param->pointer_width, (uint8_t *) &thread_index ); + } + + if(done) + { + // Read the stack pointer + int64_t stack_ptr = 0; + retval = target_read_buffer( rtos->target, thread_index + param->thread_stack_offset, param->pointer_width, (uint8_t*)&stack_ptr); + if ( retval != ERROR_OK ) + { + LOG_OUTPUT("Error reading stack frame from eCos thread\r\n"); + return retval; + } + + return rtos_generic_stack_read( rtos->target, param->stacking_info, stack_ptr, hex_reg_list ); + } + + return -1; +} + + + +static int eCos_get_symbol_list_to_lookup(symbol_table_elem_t * symbol_list[]) +{ + unsigned int i; + *symbol_list = (symbol_table_elem_t *) malloc( sizeof( symbol_table_elem_t ) * ECOS_NUM_SYMBOLS ); + + for( i = 0; i < ECOS_NUM_SYMBOLS; i++ ) + { + (*symbol_list)[i].symbol_name = eCos_symbol_list[i]; + } + + return 0; +} + +static int eCos_detect_rtos( struct target* target ) +{ + if ( ( target->rtos->symbols != NULL ) && + ( target->rtos->symbols[eCos_VAL_thread_list].address != 0 ) ) + { + // looks like eCos + return 1; + } + return 0; +} + +static int eCos_create( struct target* target ) +{ + int i = 0; + while ( ( i < ECOS_NUM_PARAMS ) && ( 0 != strcmp( eCos_params_list[i].target_name, target->type->name ) ) ) + { + i++; + } + if ( i >= ECOS_NUM_PARAMS ) + { + LOG_OUTPUT("Could not find target in eCos compatability list\r\n"); + return -1; + } + + target->rtos->rtos_specific_params = (void*) &eCos_params_list[i]; + target->rtos->current_thread = 0; + target->rtos->thread_details = NULL; + return 0; +} diff --git a/src/rtos/rtos.c b/src/rtos/rtos.c index 3cdd9125..9eed08e0 100644 --- a/src/rtos/rtos.c +++ b/src/rtos/rtos.c @@ -38,11 +38,13 @@ static int str_to_hex( char* hex_dst, char* src ); /* RTOSs */ extern struct rtos_type FreeRTOS_rtos; extern struct rtos_type ThreadX_rtos; +extern struct rtos_type eCos_rtos; static struct rtos_type *rtos_types[] = { &ThreadX_rtos, &FreeRTOS_rtos, + &eCos_rtos, NULL }; diff --git a/src/rtos/rtos_ecos_stackings.c b/src/rtos/rtos_ecos_stackings.c new file mode 100644 index 00000000..a81b4771 --- /dev/null +++ b/src/rtos/rtos_ecos_stackings.c @@ -0,0 +1,63 @@ +/*************************************************************************** + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "rtos.h" + +static const struct stack_register_offset rtos_eCos_Cortex_M3_stack_offsets [] = +{ { 0x0c, 32 }, // r0 + { 0x10, 32 }, // r1 + { 0x14, 32 }, // r2 + { 0x18, 32 }, // r3 + { 0x1c, 32 }, // r4 + { 0x20, 32 }, // r5 + { 0x24, 32 }, // r6 + { 0x28, 32 }, // r7 + { 0x2c, 32 }, // r8 + { 0x30, 32 }, // r9 + { 0x34, 32 }, // r10 + { 0x38, 32 }, // r11 + { 0x3c, 32 }, // r12 + { -2, 32 }, // sp + { -1, 32 }, // lr + { 0x40, 32 }, // pc + { -1, 96 }, // FPA1 + { -1, 96 }, // FPA2 + { -1, 96 }, // FPA3 + { -1, 96 }, // FPA4 + { -1, 96 }, // FPA5 + { -1, 96 }, // FPA6 + { -1, 96 }, // FPA7 + { -1, 96 }, // FPA8 + { -1, 32 }, // FPS + { -1, 32 }, // xPSR +}; + + +const struct rtos_register_stacking rtos_eCos_Cortex_M3_stacking = +{ + 0x44, // stack_registers_size + -1, // stack_growth_direction + 26, // num_output_registers + rtos_eCos_Cortex_M3_stack_offsets // register_offsets +}; + + diff --git a/src/rtos/rtos_ecos_stackings.h b/src/rtos/rtos_ecos_stackings.h new file mode 100644 index 00000000..82f08553 --- /dev/null +++ b/src/rtos/rtos_ecos_stackings.h @@ -0,0 +1,30 @@ +/*************************************************************************** + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ + +#ifndef INCLUDED_RTOS_STANDARD_STACKINGS_H_ +#define INCLUDED_RTOS_STANDARD_STACKINGS_H_ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "rtos.h" + +extern const struct rtos_register_stacking rtos_eCos_Cortex_M3_stacking; + +#endif //ifndef INCLUDED_RTOS_STANDARD_STACKINGS_H_ -- 2.39.5